What I mean is, if someone types in your URL by memory, (a mental bookmark, if you will) isn't that just as good as clicking a bookmark?
For instance, I don't feel the need to bookmark CNN's web site. If I want news, I just type www.cnn.com and [enter]. Would their popularity be lessened somehow - or increased - if I were to make a desktop shortcut for that action? Or a bookmark, or toolbar button?
I'm pretty sure it's not possible - at least not with modern browsers (older browsers may have been less concerned for user's privacy but these days features like that are frowned upon by most web users).